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1999 Chevrolet Monte Carlo

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

About this comparison →

When problems were reported

Mileage at the reported incident

44 reports with mileage · 81 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Service Brakes, Hydraulic. Review the 45 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine And Engine Cooling. Review the 31 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 10 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

5 crash reports6 fire reports1 injury reports

What owners actually said

125 reports
Mileage unknown · Jan 14, 2002
Service Brakes, Hydraulic

SINCE CAR WAS PURCHASED I HAVE COMPLAINED OF POOR BRAKING WHEN WHEELS ARE WET DUE TO RAIN,SNOW OR CAR WASH..COMPLAINED TO 2 DIFFERENT DEALERSHIPS WHO ACKNOWLEDGED THAT GM IS HAVING BRAKE PROBLEMS ON SOME MODELS,AND THERE IS NOTHING THEY CAN REPLACE TO IMPROVE THE DESIGN OF THE BRAKES AND REFUSED TO EVEN TAKE WHEELS OFF TO CHECK …

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SINCE CAR WAS PURCHASED I HAVE COMPLAINED OF POOR BRAKING WHEN WHEELS ARE WET DUE TO RAIN,SNOW OR CAR WASH..COMPLAINED TO 2 DIFFERENT DEALERSHIPS WHO ACKNOWLEDGED THAT GM IS HAVING BRAKE PROBLEMS ON SOME MODELS,AND THERE IS NOTHING THEY CAN REPLACE TO IMPROVE THE DESIGN OF THE BRAKES AND REFUSED TO EVEN TAKE WHEELS OFF TO CHECK PADS AND ROTORS UNLESS I AGREED TO PAY FOR INSPECTION...AFTER FILING PREVIOUS COMPLAINT WITH NHTSA WEBSITE,I WAS CONTACTED BY GM FOR A TECH SERV BULLETIN/RECALL TO CUT AWAY A PIECE OF THE FENDER LINER, ENGINEERS SAID WOULD FIX TROUBLE..I BROUGHT CAR TO MCGUIRE CHEVY IN MARSHFIED, MASS TO HAVE RECALL PERFORMED AND HAVE NOTICED NO IMPROVEMENT..THIS DESIGN FLAW IS AN ACCIDENT WAITING TO HAPPEN..AT HIGHWAY SPEEDS,IT'S ALWAYS A MYSTERY HOW HARD I'LL HAVE TO APPLY BRAKE PEDAL PRESSURE,AND HOW LONG I'LL HAVE TO WAIT BEFORE CAR ACTUALLY SLOWS DOWN!...IN THIS DAY AND AGE TO HAVE A MAJOR CAR COMPANY AT A LOSS AS TO HOW TO MAKE A CAR STOP CONSISTENTLY WITH 4 WHEEL DISCS SHOULD BE CRIMINAL,OR AT THE VERY LEAST NEGLIGENT!!! GM SHOULD BE FORCED TO CORRECT THIS PROBLEM IMMEDIATELY! THIS CAR WILL BE OUT OF BUMPER TO BUMPER WARRANTY IN FEBRUARY OF 2002. PLEASE HELP. *AK

NHTSA ODI #756840

Mileage unknown · Dec 26, 2001
Service Brakes, Hydraulic

DURING INCLEMENT WEATHER /RAIN BRAKE SYSTEM FAILS TO OPERATE PROPERLY. THERE IS A DELAY OF 10 TO 15 SECONDS AFTER BRAKE PEDAL IS PRESSED BEFORE VEHICLE SLOWS DOWN. DEALERSHIP HAS EXAMINED VEHICLE AND CUT OUT A PART OF THE WHEEL WELL. THIS REPAIR HAS FAILED TO REMEDY THE PROBLEM. PLEASE PROVIDE ANY ADDITIONAL INFORMATION …

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DURING INCLEMENT WEATHER /RAIN BRAKE SYSTEM FAILS TO OPERATE PROPERLY. THERE IS A DELAY OF 10 TO 15 SECONDS AFTER BRAKE PEDAL IS PRESSED BEFORE VEHICLE SLOWS DOWN. DEALERSHIP HAS EXAMINED VEHICLE AND CUT OUT A PART OF THE WHEEL WELL. THIS REPAIR HAS FAILED TO REMEDY THE PROBLEM. PLEASE PROVIDE ANY ADDITIONAL INFORMATION / DOCUMENTATION.*AK

NHTSA ODI #8001044

Mileage unknown · Dec 3, 2001
Service Brakes, Hydraulic

WHEN IT RAINS OR SNOWS VEHICLE IS HARD TO STOP. ROTORS WILL NOT STAY DRY. ALSO, CONSUMER HAD TO PUMP BRAKES TO STOP VEHICLE. CONTACTED DEALER, AND DEALER STATED IT WAS A COMMON CHARACTERISTIC IN MONTE CARLOS WITH SAME STYLE RIM.*AK

NHTSA ODI #899785

Mileage unknown · Oct 5, 2001
Service Brakes, Hydraulic

WHEN COMING TO A STOP AT SLOW SPEEDS AND APPLYING BRAKES PEDAL GOES TO FLOOR, NO BRAKING ACTION. THIS HAS HAPPENED 3 TIMES. DEALER REPLACED MASTER CYLINDER 3 TIMES IN JANUARY 2000, JUNE 2001, AND SEPTEMBER 2001.*AK

NHTSA ODI #897402

Mileage unknown · Aug 28, 2001
Service Brakes, Hydraulic

REAR BRAKES PREMATURELY WORE OUT. ALSO, WHEN APPLYING BRAKES SUDDENLY, CALIPERS WON'T RELEASE AND WHEELS LOCKED UP. DEALER SAID NOTHING WAS WRONG WITH THEM.*AK

NHTSA ODI #895336

Mileage unknown · Aug 27, 2001
Service Brakes, Hydraulic

WE HAVE ATTEMPTED TO GET THIS MATTER TAKEN CARE OF WITH THE DEALERSHIP AND THE MANUFACTURER AND HAVE BEEN TOLD THAT THE PADS AND ROTORS FAILING ON THE 1999 MONTE CARLO EVERY 8,000 MILES IS A NORMAL OCCURRENCE, AND NEITHER WILL STAND BY THE WARRANTIES THAT THEY GIVE NOR WILL THEY REPAIR THE DEFECT.*AK

NHTSA ODI #751208

Mileage unknown · Aug 14, 2001
Service Brakes, Hydraulic

THE BRAKES WILL NOT OPERATE TO STOP THE VEHICLE NORMALLY WHEN DRIVEN IN THE RAIN AT HIGHWAY SPEEDS. THE PEDAL WILL GET HARD LIKE THERE IS NO POWER BRAKES WORKING. AFTER YOU RIDE THE BRAKE WITH CONSIDERABLY MORE EFFORT THE BRAKES WILL RETURN TO NORMAL AND SLOW THE CAR. IF THEY ARE NEEDED IN AN EMERGENCY SITUATION, THEY ARE USELES…

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THE BRAKES WILL NOT OPERATE TO STOP THE VEHICLE NORMALLY WHEN DRIVEN IN THE RAIN AT HIGHWAY SPEEDS. THE PEDAL WILL GET HARD LIKE THERE IS NO POWER BRAKES WORKING. AFTER YOU RIDE THE BRAKE WITH CONSIDERABLY MORE EFFORT THE BRAKES WILL RETURN TO NORMAL AND SLOW THE CAR. IF THEY ARE NEEDED IN AN EMERGENCY SITUATION, THEY ARE USELESS. THE CAR WAS BROUGHT TO THE DEALER WHEN NEW. THE ROTORS WHERE CHANGED BUT THE PROBLEM PERSISTS. TO THIS DAY I HAVE TO ANTICIPATE THE PROBLEM WHEN IN THE RAIN SO AS NOT TO GET INTO TROUBLE FROM IT. I THINK THE COMPANY KNOWS THIS IS A PROBLEM SINCE ON THE NEXT YEAR DESIGNED CAR THE BRAKES WHERE MADE MUCH BIGGER. BOTH IN THE BRAKE ROTOR SIZE AND THE CALIPER AND BRAKE SIXE. I AM AN A.S.E. CERTIFIED MASTER MECHANIC SO I KNOW WHAT I'M SPEAKING ABOUT. CONTACT ME IF YOU LIKE AND I CAN EXPLAIN MORE.*AK

NHTSA ODI #750477

Mileage unknown · Aug 10, 2001
Service Brakes, Hydraulic

WHEN APPLYING BRAKES UNDER NORMAL CONDITIONS AT 25MPH PEDAL WENT TO THE FLOOR, RESULTING IN EXTENDED STOPPING DISTANCE. DEALER HAS REPLACED MASTER CYLINDER. MANUFACTURE HAS BEEN NOTIFIED. PLEASE PROVIDE ADDITIONAL INFORMATION*AK.

NHTSA ODI #894019

Mileage unknown · Aug 7, 2001
Service Brakes, Hydraulic

INTERMITTENTLY WHEN BRAKES ARE APPLIED ON AN INCLINE VEHICLE WILL ROLL FORWARD. DEALER HAS INSPECTED VEHICLE, H0OWEVER, PROBLEM STILL EXISTS. PLEASE PROVIDE ADDITIONAL INFORMATION.*AK

NHTSA ODI #893675

Mileage unknown · Jul 5, 2001
Service Brakes, Hydraulic

AFTER READING THE OTHER CONSUMER COMPLAINTS ABOUT THE MONTE CARLOS I FEEL THAT I SHOULD ALSO INFORM YOU ABOUT THE EXPERIENCES I HAVE HAD WITH MINE. AT A LITTLE OVER 7000 MILES MY CALIPERS STARTED "STICKING". I WOULD GO TO BACK UP OR MOVE FORWARD AND THE RIGHT FRONT CALIPER WOULD MAKE A WHINING NOISE. TOOK TO THE DEALERSHIP 3 …

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AFTER READING THE OTHER CONSUMER COMPLAINTS ABOUT THE MONTE CARLOS I FEEL THAT I SHOULD ALSO INFORM YOU ABOUT THE EXPERIENCES I HAVE HAD WITH MINE. AT A LITTLE OVER 7000 MILES MY CALIPERS STARTED "STICKING". I WOULD GO TO BACK UP OR MOVE FORWARD AND THE RIGHT FRONT CALIPER WOULD MAKE A WHINING NOISE. TOOK TO THE DEALERSHIP 3 TIMES FOR THAT PROBLEM AND FINALLY ON THE 3RD ATTEMPT THE CALIPER WAS "RECONDITIONED"..... PROBLEM STILL EXISTS. THE PROBLEMS WITH THE ENGINE WOULD TAKE WAY TOO MUCH ROOM TO GO INTO FULL DETAIL BUT I WOULD LIKE TO BRIEFLY EXPLAIN THOSE PROBLEMS AS WELL. MY CAR HAS BEEN IN THE DEALERSHIP 5 TIMES NOW FOR A TOTAL OF 17 DAYS FOR TAPPING NOISES IN THE ENGINE. IT HAS HAD THE PISTONS, RINGS, CAMSHAFT, LIFTERS, TENSIONER PULLEY AND FLYWHEEL REPLACED... ALL THIS AND NOW THE MOTOR IS SLUGGISH AND FEELS AS THOUGH IT HAS LOST POWER.I HAVE BEEN LUCKY ENOUGH THAT THIS CAR HASN'T PUT ME ON THE SIDE OF THE ROAD YET. BUT WITH ME BEING A FULL TIME STUDENT TAKING NIGHT CLASSES AT A COLLEGE 15 MILES FROM MY HOME IT IS A SCARY THING TO THINK THAT THIS IS POSSIBLE WITH A NEW VEHICLE.*AK

NHTSA ODI #747894

Official recalls

3

15V701000 · Engine And Engine Cooling:engine; Engine And Engine Cooling:exhaust System:manifold/header/muffler/tail Pipe

Oct 26, 2015

General Motors LLC (GM) is recalling certain model year 1998-1999 Chevrolet Lumina and Oldsmobile Intrigue, 1997-2004 Buick Regal and Pontiac Grand Prix, 2000-2004 Chevrolet Impala, and 1998-2004 Chevrolet Monte Carlo vehicles. The affected vehicles were previously repaired under recalls 08V-118, 09V-116, and 15V-201 to address the possibility that engine oil may drip onto the hot exhaust manifold.

Consequence & remedy

Consequence: Engine oil that drips onto the hot surface of the exhaust manifold may result in a fire.

Remedy: The remedy applied under recalls 08V-118, 09V-116, and 15V-201 did not adequately remove the safety risk. Under the improved remedy, dealers will replace the engine’s front valve cover and gasket. Vehicles that are covered by recalls 08V-118, 09V-116, or 15V-201 that have not yet received the original remedy will instead receive the improved remedy under the original recall number. The recall began on February 19, 2016. Owners may contact Chevrolet customer service at 1-800-222-1020, Buick customer service at 1-800-521-7300, Oldsmobile customer service at 1-800-442-6537 and Pontiac customer service at 1-800-458-8006. GM's number for this recall is 15757. Note: Until the improved remedy has been applied, owners are advised to park their vehicle outside since the fire risk exists even when the vehicle is unattended.

Additional source detail variants (2)

Engine And Engine Cooling:exhaust System:manifold/header/muffler/tail Pipe

General Motors LLC (GM) is recalling certain model year 1998-1999 Chevrolet Lumina and Oldsmobile Intrigue, 1997-2004 Buick Regal and Pontiac Grand Prix, 2000-2004 Chevrolet Impala, and 1998-2004 Chevrolet Monte Carlo vehicles. The affected vehicles were previously repaired under recalls 08V-118, 09V-116, and 15V-201 to address the possibility that engine oil may drip onto the hot exhaust manifold.

Consequence: Engine oil that drips onto the hot surface of the exhaust manifold may result in a fire.

Remedy: The remedy applied under recalls 08V-118, 09V-116, and 15V-201 did not adequately remove the safety risk. Under the improved remedy, dealers will replace the engine’s front valve cover and gasket. Vehicles that are covered by recalls 08V-118, 09V-116, or 15V-201 that have not yet received the original remedy will instead receive the improved remedy under the original recall number. The recall began on February 19, 2016. Owners may contact Chevrolet customer service at 1-800-222-1020, Buick customer service at 1-800-521-7300, Oldsmobile customer service at 1-800-442-6537 and Pontiac customer service at 1-800-458-8006. GM's number for this recall is 15757. Note: Until the improved remedy has been applied, owners are advised to park their vehicle outside since the fire risk exists even when the vehicle is unattended.

Engine And Engine Cooling:engine

General Motors LLC (GM) is recalling certain model year 1998-1999 Chevrolet Lumina and Oldsmobile Intrigue, 1997-2004 Buick Regal and Pontiac Grand Prix, 2000-2004 Chevrolet Impala, and 1998-2004 Chevrolet Monte Carlo vehicles. The affected vehicles were previously repaired under recalls 08V-118, 09V-116, and 15V-201 to address the possibility that engine oil may drip onto the hot exhaust manifold.

Consequence: Engine oil that drips onto the hot surface of the exhaust manifold may result in a fire.

Remedy: The remedy applied under recalls 08V-118, 09V-116, and 15V-201 did not adequately remove the safety risk. Under the improved remedy, dealers will replace the engine’s front valve cover and gasket. Vehicles that are covered by recalls 08V-118, 09V-116, or 15V-201 that have not yet received the original remedy will instead receive the improved remedy under the original recall number. The recall began on February 19, 2016. Owners may contact Chevrolet customer service at 1-800-222-1020, Buick customer service at 1-800-521-7300, Oldsmobile customer service at 1-800-442-6537 and Pontiac customer service at 1-800-458-8006. GM's number for this recall is 15757. Note: Until the improved remedy has been applied, owners are advised to park their vehicle outside since the fire risk exists even when the vehicle is unattended.

09V116000 · Engine And Engine Cooling

Apr 8, 2009

GENERAL MOTORS IS RECALLING 1,497,516 MY 1997-2003 BUICK REGAL, MY 1998-2003 CHEVROLET LUMINA, MONTE CARLO AND IMPALA, MY 1998-1999 OLDSMOBILE INTRIGUE, MY 1997-2003 PONTIAC GRAND PRIX VEHICLES EQUIPPED WITH A 3.8L V6 NATURALLY ASPIRATED ENGINE. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH DROPS OF ENGINE OIL MAY BE DEPOSITED ON THE EXHAUST MANIFOLD THROUGH HARD BRAKING.

Consequence & remedy

Consequence: IF THE MANIFOLD IS HOT ENOUGH AND THE OIL RUNS BELOW THE HEAT SHIELD, IT MAY IGNITE INTO A SMALL FLAME AND MAY SPREAD TO THE PLASTIC SPARK PLUG WIRE CHANNEL AND BEYOND INCREASING THE RISK OF AN ENGINE COMPARTMENT FIRE.

Remedy: DEALERS WILL REPLACE THE ENGINE’S FRONT VALVE COVER AND FRONT-VALVE-COVER GASKET WITH NEW PARTS OF AN IMPROVED DESIGN AND REMOVE THE ENGINE’S PLASTIC COVER AND PLASTIC OIL-FILL-TUBE EXTENSION, FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN DURING MAY 2016. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, OLDSMOBILE AT 1-800-630-6537, AND PONTIAC AT 1-800-620-7668 OR HTTP://WWW.PONTIAC.COM OR HTTP:WWW.GMOWNERCENTER.COM.

02V329000 · Air Bags:frontal

Dec 9, 2002

ON CERTAIN PASSENGER, SPORT UTILITY VEHICLES AND MINI VANS, SOME OF THESE VEHICLES HAVE A PASSENGER AIR BAG THAT WAS MANUFACTURED WITHOUT A CHECK VALVE PIN. AN AIR BAG WITHOUT THE CHECK VALVE PIN COULD PRODUCE INCREASED PRESSURE AT THE ONSET OF THE AIR BAG DEPLOYMENT AND REDUCED PRESSURE AFTERWARD.

Consequence & remedy

Consequence: THIS COULD INCREASE THE SEVERITY OF INJURY TO A PERSON WHO WAS NOT PROPERLY RESTRAINED AND WHO WAS CLOSE TO THE PASSENGER AIR BAG AT THE TIME OF DEPLOYMENT. IT COULD ALSO REDUCE THE AB8ILITY OF THE AIR BAG TO PROTECT A RESTRAINED FRONT SEAT PASSENGER.

Remedy: DEALERS WILL INSPECT AND, IF NECESSARY, REPLACE THE PASSENGER AIR BAG. OWNER NOTIFICATION BEGAN DECEMBER 16, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020, PONTIAC AT 1-800-762-2737, OLDSMOBILE AT 1-800-442-6537, OR SATURN AT 1-800-553-6000, PROMPT #3.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

1

EA02030 · Engine Compartment Fires

Opened Oct 22, 2002 · Closed Mar 9, 2004

Status: closed (inferred from source dates) · Fuel System, Gasoline; Fuel System, Gasoline:delivery; Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings

EA02-030 IS CLOSED WITH GMEA02-030 IS CLOSED WITH GM?S ACTIONS IN 03V-473 AND 04V-090 RECALLING APPROXIMATELY 529,000 MY 1998-99 C- AND H-BODY VEHICLES EQUIPPED WITH DEFECTIVE FUEL PRESSURE REGULATORS.THESE VEHICLES WERE EQUIPPED WITH PLASTIC INTAKE MANIFOLDS THAT ARE UNABLE TO CONTAIN PRESSURES THAT OCCUR IN SOME BACKFIRE EVENTS AND DEFECTIVE FUEL PRESSURE REGULATORS WITH LEAKING DIAPHRAGMS THAT CAN PROVIDE A SOURCE OF FUEL TO PRODUCE A COMBUSTIBLE AIR-FUEL MIXTURE IN THE MANIFOLD.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY ODI THAT NO SAFETY DEFECT EXISTS IN THE VEHICLES THAT ARE NOT INCLUDED IN GM?S RECALLS.ODI WILL CONTINUE TO MONITOR THE INCIDENCE OF MANIFOLD RUPTURES AND RELATED FIRES IN OTHER MY 1995-2002 GM PASSENGER CARS EQUIPPED WITH THE SUBJECT INTAKE MANIFOLD.FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.

Additional source detail variants (3)

Fuel System, Gasoline:delivery

EA02-030 IS CLOSED WITH GMEA02-030 IS CLOSED WITH GM?S ACTIONS IN 03V-473 AND 04V-090 RECALLING APPROXIMATELY 529,000 MY 1998-99 C- AND H-BODY VEHICLES EQUIPPED WITH DEFECTIVE FUEL PRESSURE REGULATORS.THESE VEHICLES WERE EQUIPPED WITH PLASTIC INTAKE MANIFOLDS THAT ARE UNABLE TO CONTAIN PRESSURES THAT OCCUR IN SOME BACKFIRE EVENTS AND DEFECTIVE FUEL PRESSURE REGULATORS WITH LEAKING DIAPHRAGMS THAT CAN PROVIDE A SOURCE OF FUEL TO PRODUCE A COMBUSTIBLE AIR-FUEL MIXTURE IN THE MANIFOLD.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY ODI THAT NO SAFETY DEFECT EXISTS IN THE VEHICLES THAT ARE NOT INCLUDED IN GM?S RECALLS.ODI WILL CONTINUE TO MONITOR THE INCIDENCE OF MANIFOLD RUPTURES AND RELATED FIRES IN OTHER MY 1995-2002 GM PASSENGER CARS EQUIPPED WITH THE SUBJECT INTAKE MANIFOLD.FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.

Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings

EA02-030 IS CLOSED WITH GMEA02-030 IS CLOSED WITH GM?S ACTIONS IN 03V-473 AND 04V-090 RECALLING APPROXIMATELY 529,000 MY 1998-99 C- AND H-BODY VEHICLES EQUIPPED WITH DEFECTIVE FUEL PRESSURE REGULATORS.THESE VEHICLES WERE EQUIPPED WITH PLASTIC INTAKE MANIFOLDS THAT ARE UNABLE TO CONTAIN PRESSURES THAT OCCUR IN SOME BACKFIRE EVENTS AND DEFECTIVE FUEL PRESSURE REGULATORS WITH LEAKING DIAPHRAGMS THAT CAN PROVIDE A SOURCE OF FUEL TO PRODUCE A COMBUSTIBLE AIR-FUEL MIXTURE IN THE MANIFOLD.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY ODI THAT NO SAFETY DEFECT EXISTS IN THE VEHICLES THAT ARE NOT INCLUDED IN GM?S RECALLS.ODI WILL CONTINUE TO MONITOR THE INCIDENCE OF MANIFOLD RUPTURES AND RELATED FIRES IN OTHER MY 1995-2002 GM PASSENGER CARS EQUIPPED WITH THE SUBJECT INTAKE MANIFOLD.FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.

Fuel System, Gasoline

EA02-030 IS CLOSED WITH GMEA02-030 IS CLOSED WITH GM?S ACTIONS IN 03V-473 AND 04V-090 RECALLING APPROXIMATELY 529,000 MY 1998-99 C- AND H-BODY VEHICLES EQUIPPED WITH DEFECTIVE FUEL PRESSURE REGULATORS.THESE VEHICLES WERE EQUIPPED WITH PLASTIC INTAKE MANIFOLDS THAT ARE UNABLE TO CONTAIN PRESSURES THAT OCCUR IN SOME BACKFIRE EVENTS AND DEFECTIVE FUEL PRESSURE REGULATORS WITH LEAKING DIAPHRAGMS THAT CAN PROVIDE A SOURCE OF FUEL TO PRODUCE A COMBUSTIBLE AIR-FUEL MIXTURE IN THE MANIFOLD.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY ODI THAT NO SAFETY DEFECT EXISTS IN THE VEHICLES THAT ARE NOT INCLUDED IN GM?S RECALLS.ODI WILL CONTINUE TO MONITOR THE INCIDENCE OF MANIFOLD RUPTURES AND RELATED FIRES IN OTHER MY 1995-2002 GM PASSENGER CARS EQUIPPED WITH THE SUBJECT INTAKE MANIFOLD.FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.